Descendants of which stallion may possess HYPP?

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Study for the AQHA Judges Qualifying Exam. Prepare with flashcards and multiple choice questions, each question features hints and explanations. Get ready for your exam!

Multiple Choice

Descendants of which stallion may possess HYPP?

Explanation:
HYPP is a hereditary condition in Quarter Horses that comes from a single ancestral source, the stallion Impressive. The mutation responsible is inherited in an autosomal dominant manner, so a horse with one copy can pass it to its offspring, and many HYPP-affected horses trace their line back to Impressive. Because of that founder effect, descendants of Impressive may possess HYPP. The other stallions listed are not the source of the HYPP mutation in AQHA pedigrees, so their lines aren’t the origin of HYPP in the same way.

HYPP is a hereditary condition in Quarter Horses that comes from a single ancestral source, the stallion Impressive. The mutation responsible is inherited in an autosomal dominant manner, so a horse with one copy can pass it to its offspring, and many HYPP-affected horses trace their line back to Impressive. Because of that founder effect, descendants of Impressive may possess HYPP. The other stallions listed are not the source of the HYPP mutation in AQHA pedigrees, so their lines aren’t the origin of HYPP in the same way.

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